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309S chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 309S

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UNS 309S

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This page is mainly introduced the 309S chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 309S,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Chemical compositions of SAE wrought stainless steels

Steel Garde:309S
Type:Stainless Steels
Country:USA
Standard:UNS

Standard Number:

ITEM	Standard Number	Descriptions
1	SAE J 405 (1998)	Chemical compositions of SAE wrought stainless steels
2	SAE J 467 (1968)	Special Purpose Alloys ("Superalloys")

Metallographic Structure:Austenite
Application:Chemical compositions of SAE wrought stainless steels

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
309S	YB	USA
A 167 Type 309S	SAE	USA
A 213 TP309S	SAE	USA
A 240 Type 309S	SAE	USA
A 249 TP309S	SAE	USA
A 276 309S	SAE	USA
A 312 TP309S	SAE	USA
A 314 309S	SAE	USA
A 358 309S	SAE	USA
A 409 TP309S	SAE	USA
A 473 309S	SAE	USA
A 478 Type 309S	SAE	USA
A 479 309S	SAE	USA
A 511 MT309S	SAE	USA
A 554 MT 309S	SAE	USA
A 580 Type 309S	SAE	USA
A 813 Grade TP 309S	SAE	USA
A 814 Grade TP 309S	SAE	USA
A 943 TP309S	SAE	USA
A 240 S30908	SAE	USA
A 249 S30908	SAE	USA
A 276 S30908	SAE	USA
A 314 S30908	SAE	USA
A 358 S30908	SAE	USA
A 409 S30908	SAE	USA
A 473 S30908	SAE	USA
A 478 S30908	SAE	USA
A 580 S30908	SAE	USA
A 813 S30908	SAE	USA
A 814 S30908	SAE	USA
S30908	AISI	USA
SA-240 S30908	AMS	USA
SA-249 S30908	AMS	USA
SA-813 S30908	AMS	USA
SA-814 S30908	AMS	USA
A 554 MT 309S -Cb	SAE	USA
A 240 S30940	SAE	USA
A 249 S30940	SAE	USA
A 276 S30940	SAE	USA
A 314 S30940	SAE	USA
A 358 S30940	SAE	USA
A 409 S30940	SAE	USA
A 478 S30940	SAE	USA
A 580 S30940	SAE	USA
A 813 S30940	SAE	USA
A 814 S30940	SAE	USA
S30940	AISI	USA
SA 249 S30940	AMS	USA
SA-240 S30940	AMS	USA
SA-813 S30940	AMS	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C		0.08
Si		1.00
Mn		2.00
P		0.045
S		0.03
Cr	22.0	24.0
Ni	12.0	15.0

Mechanical Properties

Tensile strength	327～120	σb/MPa
Yield Strength	840	σ 0.2 ≥/MPa
Elongation	90	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	979～049	-
HRC	30	-

Physical Properties

Thermal expansion	20-42	e-6/K
Thermal conductivity	09-74	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	3380-8157	째C
Density	2954-4547	kg/m³
Resistivity	0.50-0.60	Ohm.mm²/m

Heat Treatment Regime

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Size Availability

Steel Grade	Specification	Processing range(mm)
309S Stainless Steels	Round Bar and Hollow Bar	Φ1 to Φ2000
	Square and Flat Steel	Φ10 to Φ100
	Plate and Sheet	0.08-800(Thickness)10-1500(Width)Length
	Tube or Pipe	OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
	Coil and Strip Steel	THK:0.1mm Width:1500mm
	Forged	Ring/Cylindrical/Disk